One things that a DUI attorney, such as those at Steven T. Fox Law Firm, can help you do before a criminal trial for drunk driving is to evaluate the evidence that will be presented in court. There are a few different tests that can corroborate a drunk driving sentence, but they are almost never completely foolproof. Here are some considerations for each type of sobriety test. 

Field Sobriety Tests

Field sobriety tests are one of the easiest types of drunk driving tests to dispute. These might include tests of cognitive ability, hand eye coordination, and ability to follow social cues. Although these tests can make a person look like they were driving under the influence, there are often other causes that can make a person fail a sobriety test. 

For cognitive tests, you might argue that you are dyslexic or have a learning disability or cognitive impairment. Cognitive skills can vary a lot based on your mood and energy levels as well, so failing the cognitive tests isn't a sure sign of drunkenness. The hand eye coordination skills depend on your natural abilities as well as vision issues. You might argue that your failure of these tests was due to a visual impairment that needs to be checked, rather than a lack of sobriety. 


Your officer might have also issued a breathalyzer test in the field. These tests proved some indication of a drunk driving charge, but they aren't always completely accurate. The police officer's breathalyzer may have malfunctioned, for instance. Or, you might have recently used an alcohol-based mouth wash that affected the readings. It's worth looking into these defenses and presenting them in court. 

Urine Tests

If you were taken into the police station after your drunk driving arrest, then the officer may have ordered a urine test to be collected as additional evidence Even when these come back positive, you should have your DUI defense lawyer look into their validity. The scientific process for determining alcohol content from a urine test requires the lab technician to measure the volume of urine and then correspond it to an acceptable range based on your body weight. But some people may pass more or less alcohol into their urine, so the test is not a completely reliable method of testing. 

Blood Tests

Blood tests are one test that may be fairly accurate. In this case, you might want to talk with your DUI defense lawyer about the options for a plea deal instead of trying to negate your DUI charge completely; however, the blood tests still deserve some scrutiny by a medical professional.